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  • Osprey Packs - Atmos AG 65 Backpack - 3783-4150in - Absinthe Green
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  • Osprey Packs - Atmos AG 65 Backpack - 3783-4150in - Absinthe Green
  • Osprey Packs - Atmos AG 65 Backpack - 3783-4150in - Cinnabar Red
  • Osprey Packs - Atmos AG 65 Backpack - 3783-4150in - Graphite Grey

Osprey Packs Atmos AG 65 Backpack - 3783-4150in


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    31 Reviews


    Enjoy the journey.

    Backpacking isn't the most enjoyable thing when all you can think about is getting to your campsite and ditching your pack. The newly redesigned Osprey Atmos AG 65 Backpack features Osprey's Anti-Gravity Suspension system, so you can take your mind off your aching back and enjoy the views while you hike. The system places a continuous panel of lightweight mesh from the top of the back to the hips for a seamless design that automatically contours to your back. Not only does this make the pack more comfortable, but it increases your range of movement. On top of that, the Atmos AG has an adjustable harness system, so you can dial in the perfect fit for your individual torso size.

    Built for multi-day backpacking trips, the Atmos AG 65 Backpack has everything you'd expect from serious mountain pack. An internal hydration sleeve lets you fit the pack with your favorite hydration system. A top access point makes for easy packing, while the floating lid adjusts to make room for extra gear on big trips. The lid can also be removed to save weight for those hard summit pushes. Two front panel pockets stash extra layers, maps, and a few snacks, while multiple gear loops allow you attach your trekking poles and ice axe.

    • Anti-Gravity suspension system
    • Adjustable torso length
    • 30-50lb load range
    • Top access with zippered front panel access point
    • Removable/floating top lid
    • Removable sleeping pad straps
    • 100D x 630D nylon dobby main fabric
    • Internal reservoir sleeve
    • Front panel pockets
    • Trekking pole and ice tool gear loops
    • Internal compression strap
    • Item #OSP002J

    Tech Specs

    [main] 100D x 630D nylon dobby, [accent] 210D high-tenacity nylon, [bottom] 420HD nylon packcloth
    [small] 3783 cu in, [medium] 3967 cu in, [large] 4150 cu in
    Waist Belt
    Hydration Compatible
    Reservoir Included
    Rain Cover
    sold separately
    Weight Capacity
    50 lbs
    [medium] 33 x 15 x 15 in
    Claimed Weight
    [medium] 4 lbs 6 oz
    Recommended Use
    backpacking, hiking & camping
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Video review of an awesome pack!

    • Familiarity: I've put it through the wringer

    All things considered, I like this pack. I'm in Alaska using it as a backpacking guide. I did a video review of this on youtube, if it doesn't answer any questions you have just comment there and I will find the answer for you. I would recommend this pack.

    Lightweight, comfortable bag

    • Familiarity: I've used it once or twice and have initial impressions

    The Osprey Atmos 65 is a very comfortable and well ventilated pack at a very reasonable cost and weight.

    For moderate weights (less than ~40lbs) the Atmos 65 AG is a comfortable pack and its AG (Anti-Gravity) system spread the pack load wonderfully across the hips, back, and shoulders. For warm weather hikers the Atmos also brings a near unprecedented amount of ventilation and is worth taking a look at if you log a lot of time in these types of climates. The Atmos has a great variety of of features, such as pockets and organizational ability, without much weight penalty.

    The Atmos' only drawback: if you carry a lot of heavier loads (50+ pounds) either because your preference is for mostly extended trips or you just chronically pack heavy, we'd recommend a different pack. But for most people on 2-7 night trips, or longer for folks who pack lighter, the Osprey Atmos 65 should be a top consideration.

    New Go-To

    • Familiarity: I've used it several times

    Let me preface this by saying that I'm a serious pack-nerd. I've got a closet full of packs for everything – hiking, backpacking, climbing, skiing, etc. Out of all of my packs, the Atmos is my new favorite. The suspension system rocks, and there is such good air-flow through the back panel that it barely feels like you're wearing a pack. Plenty of well-thought out pockets and an easily removable top lid. I haven't babied it too much, and the Atmos is still looking like new – very durable fabric. As others have said, the hip belt pockets can be hard to close when the belt is cinched down, but that's far from a deal breaker. I like the Atmos so much that I might join all of my friends and start using the Osprey as my climbing gear pack on long approaches.

    You know you want it, and here is why!

      This is by far my favorite bag I own, mainly due to all the great features and suspension. Starting off this bag comes with a large brain, giving you more than enough room to store any items you may want to get to quickly (i.e. first aid kit, sunscreen, shades, etc..). Another great small feature is the hip straps, contain a awesome little pocket for another quick access point. This pocket I mainly use for chap stick, knife, or other small items that I want to access quickly. As well this pack has a large main compartment that you can fit everything you may need on a multi day trip (food, sleeping bag, tent/hammock, etc.). To help keep everything organized I absolutely recommend some nice stuff sacks or dry bags to keep everything organized in this large compartment.

      Outside the great pockets that make your life easier, this pack has the best suspension system that I have used. The anti-gravity system helps carry disperse the weight evenly and as well helps your back breath. When walking long distances you will realize how important it is to have a great suspension, making every step easier and more comfortable.

      Overall I recommend this bag to anyone that is looking for reliable, comfortable, and the best warranty possible. If you don’t know Osprey has the all-mighty warranty policy that will ensure that your bag is good to go for years and years to come.

      Inserted is a pic from Osprey of the Anti Gravity Suspension that should help visualize how advanced this system is.

      You know you want it, and here is why!

      Osprey 65 not the best

      • Familiarity: I've put it through the wringer

      I took this pack on the AT for 34 days and the entire hike had problems with the straps slipping. I wasted so much energy holding the strap ends to prevent slipping I often screamed obscenities aloud. When I sent the pack back to OSPREY, I told them to test it fully loaded, they returned it saying there was nothing wrong with the pack. Obviously they didn't test it.

      Fantastic Pack

        I got this pack as a gift for my dad and he keeps raving about how this is unlike any pack he has owned. He did have a very old pack before this so he did upgrade to different technology but he is so surprised on how light the pack is when he has it on his back. He has only used in for two over night trips but he is very satisfied so far. He says he would give this five stars and he would recommend this pack to anyone.

        Lighter than zero-gravity

        • Familiarity: I've used it once or twice and have initial impressions

        I finally got to take my pack out for a real test run this weekend on an overnight in Escalante. It was still fairly cold at night so had to pack a tent and a good amount of layers, plus wanted to weigh it down a little to see how much I could handle. It worked beautifully. The pack really is extremely comfortable, just need to make sure you set it right from the beginning to where it should sit on your body. I love that the hip straps hug your body, I think it makes for even better support. Like many other packs this one is obviously roomy, has lots of cool pockets and zips, etc. but my absolute favorite part is the anti-gravity suspension system. Not only does it make it feel like you're barely carrying any weight, but it let's your back breathe and cool off (great for someone who sweats like crazy on the trail). Can't wait to take this pack out for more adventures!

        Not quite anti-gravity, but pretty great

        • Familiarity: I've used it once or twice and have initial impressions

        I inaugurated this pack with 6 nights in Grand Canyon, so it got its ups and downs, so to speak. I really like this pack. I think the mesh and the orientation of the shoulder straps ( though I don't know if the straps are unique to this pack or no), made for a great pack. And in general, I just like the pack. It seems pretty rugged with solid zippers. I like its pockets -- I like a place to put a blister kit, or trail food, or maps, or a windbreaker I peeled. They have designed a nice mix of small, medium, and fairly large pockets. The only issue I had was that the platypus water cable sometimes got crimped as I jammed all my gear in.

        Great bag

        • Familiarity: I've used it once or twice and have initial impressions

        I have to agree that this is a great bag. However, I have also found the hip belt pockets are hard to close when wearing the pack. I think it may be due to the curve of the hip belt itself.

        Perfect gift!

        • Familiarity: I gave it as a gift but have feedback to share

        I gave this as a gift to my brother he hasn't been able to take this bad boy out on an overnighter yet due to weather, but he's packed it up with all his gear and tested it out . He's 5'8, medium build, and got a size medium, which fits nicely . He told me his favorite feature is the anti-gravity technology, which allows your back to breathe by minimizing contact between your back and the bag. There's also a lot of storage pockets for all your gear. Overall, he's happy with the gift.


        • Familiarity: I've put it through the wringer

        I bought this bag for my husband for work and recreation. He's a trailworker and needed something that is durable and comfortable. He says it has the best fit of any pack he's ever used in this line of work. It has plenty of room for gear and tools, handling even a full load well. His only issue with it is that the zipper pulls on the hip belt pocket can be difficult to close.

        Great pack

        • Familiarity: I've used it once or twice and have initial impressions

        This is my first Osprey pack and it didn't disappoint. I recently took it for a quick overnight trip on my families property. It was only 4 miles in but due to weather conditions I had her packed heavy with winter gear weighing in near 55 lbs. The bags mesh back design integrated into the waist strap hugs your body extremely well and made the extra weight a none issue. The pack is my new favorite as far as comfort, my only complaint is I would like to have some more external gear space. My old pack had side cargo bags that were extremely useful. All and all you can not go wrong with this pack!

        Hey Steven, so glad you like this Atmos! The hard part with side bags is that they can clutter up the pack. We do try to give you mesh side pockets and a mesh shove it pocket to store those things you want on the outside, or just can't fit inside. Sounds like you had quite a load!

        Thanks for writing,
        Osprey Rep

        Best pack ever

        • Familiarity: I've put it through the wringer

        You have to buy one to know how and why this backpack belongs to a whole new generation

        Osprey 65ag

        • Familiarity: I've used it several times

        The bag over all is good. But there are some issues. 1. The bag is a pain in the ass to put on your back. Because the suspension front is folded, you have to first open it with your hand and then maneuver the bag on your back. 2. Waist pocket zippers are sometimes difficult to pull when your wearing the bag. This is because the pockets are to far back. 3. The sleeper bag compartment sometimes causes the zipper not move because if it is not packed fully, you need 2 hands to pull the zipper open. 4. The divider between the sleeping compartment and the main compartment is not zippered. It is strapped down. Maybe I will make one main compartment. 5. When wearing the bag, I felt a little pain on my left side above the waist. There is something hard on the waist belt causing the pain so now I don't pull the waist belt tight. Once all of these issues are dealt with then the bag is good.

        Hi Thomas, The bag does require you to pust it on differently than other bags, and it is the product of the way the pack hugs you. It just requires you opening up the bag. The pack divider it not zippered so you CAN make one compartment easily. The other issues I havent heard yet, so I will be sure to send them on to Osprey.


        Osprey Rep

        This Backpack Is Fantastic

          Im beginner hiker from Poland, bought this backpack in US at Altough it was my first climbing trip , I wanted to quite large backpack. This backpack can survive a lot, starting from holding inside of him full size tent, big tripod, lot of cloths, food, documents. A big pocket slots in each corner of this pack can easily fit a lot of smaller things like med kit, knife, everything that can help you survive in a wild. My 5 days story in Yellowstone National Park with this backpack on my backs was amazing and comfortable even if i did almost 60 miles of hiking. Thank you Osprey, good job!

          This Backpack Is Fantastic

          Best backpack out there...

          • Familiarity: I've used it several times

          When my wife and I decided to hike the Pacific Crest Trail, we knew we needed some quality packs that were going to be comfortable and durable for 4-5 months of straight hiking. I boiled my options down to Gregory or Osprey, and after trying the Gregory Baltoro and the Osprey Atmos, I knew the Atmos was by far the most comfortable. My wife and I got the men's and women's (Aura) versions, and have loved every trail with them.

          My favorite part about this pack is the Anti-Gravity Suspension system. Osprey designed a continuous mesh backpanel from the top of the pack to the hipbelt. It conforms to your back like a sleep number bed! Just kidding, but it really is the most comfortable fit you can find. The hipbelt and shoulder straps are awesome - I've never had them slip or had to readjust them after miles of hiking.

          We purchased our packs from REI so they each came with a raincover and small 3L drybag. Backpacking up here in Alaska, the raincovers have been essential. We haven't had our gear get wet with the raincover on while hiking, but when we left our packs on the ground in the vestibules of our tent (with the covers on and upright), the outside of the packs got a little damp overnight. One of my biggest nightmares is my TP supply getting soaked in the wilderness, so the small drybag is perfect for my daily "study supplies." Well done REI.

          The Pockets: I'm a guy, pockets are big deal to me. I love Osprey's open-loop zipper-pull design, they make life easier when your fingers are numb and you need to access your sleeping bag quickly in cold temperatures. There are two pockets on the removable lid that I've used for clothing and food and have always hiked with the lid on. For this reason I don't like the redundancy of their "FlapJacket" underneath the lid for when the lid is off. The main compartment of the pack is large and easy to compress with outside straps. Hydration bladder stores inside the main compartment. On the outside of the pack are two vertical zippered pockets for keeping maps, snacks, or anything lightweight for easy access. I really like the outer open mesh pocket for stowing your jacket when you get too warm on the trail. The bottom pocket holds a sleeping bag separate from the rest of your gear in the main compartment. There is a water bottle pouch on each side - with two openings each -and they are easily reached while you have the backpack on. There is a pocket on each side of the hipbelt . . . only complaint here is the zippered openings aren't big enough for a man to reach all his fingers in easily - my wife has smaller hands and doesn't have this problem.

          Best backpack out there...

          Hey Christopher, thank you for writing such a great review! So psyched for you and your wife that you were able to spend the time and miles together on the PCT - awesome. And that you both loved your Osprey Packs, even better.

          It's the best when your gear can enhance your trip, and not take away from it. Kudos to Osprey for this great design!

          Thanks again for the review -

          Osprey Rep

          Is this pack suitable for overnighters or shorter trips??

          Unanswered Question

          Hello Roger here,I bought this backpack recently in May,used it in June once and all the graphics came off the face along with the eagle,why was this a stick on print instead of embroidered, this was my upgrade from my north face pack that's still going strong after 9 years without an airport cover,if I was still using the sack I was using that pack would be brand new,got lazy I guess. Anyways for my faceless cannot advertise that it's an OSPREY atmos pack, that backpacker magazine raved about, what size osprey airport bag should I get,is it worth it or continue using the sack that a duffle bag came in that I have been using?

          Best regards,


          Are you sure the top lid works as a "fanny pack."

          Do you have any idea when you'll get backordered packs out to people?

          The picture of the graphite grey shows at 50L size. Can you confirm it is 65L?

          Will you be getting anymore of the graphite grey in a size medium?

          Hey Sean,

          Looks like we just got these back on the site and currently have them available to place a backorder for. Hopefully we should be seeing them back instock within about 2 weeks. Get in line soon as I suspect this awesome pack will go quick the moment they get back in stock. Let us know if you have any other questions.